I just got re-format the computer.
I use Kaspersky antivirus.
When I opened my Counter Strike 2D folder....
Suddenly Kaspersky warning pops up.
There's a virus in Counter Strike 2D!!!
Kaspersky change everything...
Change...
Change...
Change...
Until I can't play Counter Strike 2D forever and get error the application is not a valid Win32 application!
What do you think about this?